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Merser2345
@Merser2345
December 2021
1
16
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Тригонометрия,помогите,с решением,если можно
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supersuperkirip54irs
Verified answer
3 четверть =>
[email protected]
отрицательный,
[email protected]
положительный
cos^
[email protected]
= 1 - sin^
[email protected]
= 1 - 144/169 = 25/169 =>
[email protected]
= -5/13
[email protected]
=
[email protected]
/
[email protected]
= (-12)/13 / (-5)/13 = 12/5 = 2,4.
[email protected]
= -5/13
[email protected]
= 2,4
.
3 votes
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3 четверть => [email protected] отрицательный, [email protected] положительныйcos^[email protected] = 1 - sin^[email protected] = 1 - 144/169 = 25/169 => [email protected] = -5/13
[email protected] = [email protected]/[email protected] = (-12)/13 / (-5)/13 = 12/5 = 2,4.
[email protected] = -5/13
[email protected] = 2,4.